@adriballerThe reasons may be
1. Outdated mods and CC,
Do you have any mods and CC?
If yes:
Move the mods folder to the desktop.
Delete localthumbcache.package file in the game folder
Fix the game in Origin.
Origin/Library -right click on TS4 - option "Repair game"
You have to wait until Origin will fix all packs, not only the base game.
Turn on the game to create a new, empty mods folder and to check if a game is working now without mods and CC.
Check if there are new updated versions of the mods and CC you are using.
Then copy from desktop your mods and CC and paste it in the new mods folder. First, paste script mods one by one every time checking if the game is OK. Do the same with CC but if you have a lot of this, try the 50/50 method.
2. Computer problem - for example, too weak graphics card for this add-on.
Could you post your Computer's DxDiag?
To gather a DxDiag on your computer, please follow the steps here:
https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/You can attach the txt file to your post directly in option "Reply" - not Quick Reply
I don't work for EA